SWEPIC provides information on the distribution and ecology of native and exotic weeds in the southwest. Cooperative effort between USGS, NPS, and Northern Arizona University.
Organization "dedicated solely to preventing the extinction of U.S. native plants." National headquarters located at San Diego Zoo Wildlife Alliance, Beckman Center.
Website of the University of British Columbia Botanical Garden & Centre for Plant Research, which is dedicated to the conservation of plant life worldwide through scientific research, education efforts, and maintaining plant biodiversity.
A joint initiative between Fauna & Flora International (FFI) and Botanic Gardens Conservation International (BGCI), the Global Trees Campaign is the only international campaign dedicated to saving threatened trees.
Listings and descriptions of plant species that threaten ecosystems of the Pacific islands. Site maintained by USFWS's Institute of Pacific Islands Forestry.
Website of the PCA, an organization dedicated to solving the problems of native plant extinction and native habitat restoration. Site maintained by Bureau of Land Management.
Database of 12,000 publications related to seed dormancy and germination covering the period between 1890 and 1998. Maintained by Prof. G.M. Simpson from the University of Saskatchewan.
